Free Linux Foundation Certified IT Associate Exam LFCA Exam Practice Test

What technology could be used to address software dependency conflicts between applications on the same host operating system?

• Type 1 hvpervisors
• Type 2 hvpervisors
• Containers
• cgroups

When using vi or vim to edit a file, how do you exit without saving?

• :q!
• ZZ
• :wq!
• :exit

What is the Linux kernel?

• It is the core interface between a computer's hardware and its processes.
• It is another name for the operating system.
• It contains all the applications and software installed on the computer.
• It is the firmware for the computer's processor.

An IT associate has a web application running on multiple servers, configured to scale based on CPU usage. The current configuration has a minimum size of 1 and a maximum size of 5 servers, designed to launch and spread the instances across 3 Availability Zones (AZ). During a low utilization period, an entire AZ went down, and the application experienced downtime. What can the IT associate do to increase the availability of the application?

• Increase the minimum to 2
• Change to scale based on number of requests
• Decrease the AZs to 2
• Increase the maximum to 6

Which of the following is a non-functional requirement?

• The system must allow the administrator to disable user accounts.
• The system must provide the user the option to enable multi-factor authentication.
• The system must allow the user to upload a profile image.
• The system must adhere to all security requirements and regulations.

What file is created to assemble a Docker image, which contains all the commands a user has to run to make the image from start to finish?

• DockerBuild
• Dockerfile
• BuildFile
• ImageFile

Which of the following commands can be used to lock a user’s account so that they cannot log into a Linux server without removing any files, folders, or data?

• lock
• usermod
• userdel
• chmod

An IT associate is working with a video streaming provider. What is a common approach to reduce bandwidth cost while supporting the same or an increasing number of video streams and customers?

• Stop serving the video streams when a certain price limit is reached.
• Reduce the bitrate to reduce the size of the video streams.
• Serve the video streams only to a limited number of users at a time.
• Use a content delivery network to distribute the streams.

Which measures can be taken to prevent unauthorized access to cloud instances and services?

• Use multi-factor authentication, implement firewall rules, and back up data off-site.
• Implement block-chain tokens, use encrypted protocols, and encrypt the data on storage systems.
• Replicate data to another datacenter, use multi-factor authentication, and encrypt data on storage systems.
• Implement firewall rules, authentication, authorization, and encrypted protocols.

After installing the package ‘postfix’, what command would you run in order to ensure that Postfix is started on reboot?

• /etc/init.d/enable postfix
• enable postfix on
• postfix -onboot yes
• svstemctl enable postfix